I have recently noticed my brake lights have been not working?

When I turn my head lights on my brake lights will not work. When I turn the head lights off they work. Now all of a sudden the drivers side tail light wont even come on. I have replaced the bulbs, both circuit boards on the tail lights also checked all the fuses. I cannot seem to find the problem.

I do have a voltmeter but im not familiar On using them. I do have a test light. But I took my test light and checked the pins on the connector on the tail light on the side it isnt working. The only thing isnt making my test light come on is the brake light. I had the key on the off position and tried the 4 way blinkers and they wouldnt work. Only way they would come on is if I turned the key to the on position. And what is the IPM?

Ok on the side that wasnt working its working now I wiggled the connector and they started to work. On the passenger side taillight the middle bulb is bright and the top bulb is kinda dull. The drivers side looks normal. What would cause that? But I have no Brake lights now even when the lights are off.

My truck listed above is a 1500. I checked the bulbs and all fuses. They were all still good. However, when I checked them same fuses with a test light I am not getting power to them in my fuse box. So I took the fuses back out and then touched the metal prongs in the fuse slot with my test light and got nothing. What could be the cause of me not getting power to those certain fuses?

My brake lights are not working. I changed the bulbs and that is not the problem. All other tail lights work?

Electrical problem 6 cyl Four Wheel Drive Automatic 130000 miles

My brake lights quit working a few days ago. All other lights on the truck work. The cruise control works. The bulbs have been tested, they work, the brake controller (aftermarket) has been tested, it works. The brake switch was replaced twice. After that, I diagnosed the leads into the switch. There is NO constant hot into the switch (I believe there should be - pink wire w/ blue(I think) tracer). There is no power coming into the switch at all. I believe dodge sends the brake switch HOT through a multi function switch. Is there a diagram available for this that can be posted? Can the multi function switch be tested? It is a $110 part so I do not want to replace without being sure. The Chilton manual wiring schematics are worthless and very incomplete.

In addition the wiring schematic from the multi function switch to the fog lights would be appreciated, those have not functioned for several years. The lead that grounds out when activated, does not fully ground out (minimal voltage remains).

Vehicle, more specifically that above is a 1999 Ram 2500 Diesel. It is a half year vehicle in that it uses a brake switch from a 2000 Ram.

Thanks but I need the internals of the switch and before the switch so I can check the power in and jump the switch as a test. Also, am I viewing the pictures the wrong way?

This is exactly what I'm looking for.

Jdl, thanks. I will take a close look at the most recent diagram. It definitely should be hot at all times (coming into the brake light switch). I don't think its necessarily the ignition switch that's a problem, I've seen several places that the lead runs through the multi-function switch, that's what I want to jump. However, it goes through another box between the multi-function switch and brake switch. That's what I need to figure out.

Jdl,

Could you also post that same schematic for a 2000 Dodge (blown up in two parts). Some, not all of the wire colors correspond to what I have. The stop switch is most definately from a 2000 dodge though as my truck is some mid-year hybrid.

Also, if you can, where do you get these diagrams? If it is from a technical service manual, I'll happily get one of my own.

I had that problem with my 2002 diesel 2500. Only the rear tail lights quit. Well The guy at sand lake repair store changed a fues and a relay under the hood. Cost me 45 bucks and it worked ok.

Not sure what fuse or relay. But it was all under the hood not in the cab.

I think the fuse was a 40 because I bought a spare and it is still there as an extra. Not quite a blade style. But a funny colored fues resembeling monopoly houses stacked ontop of each other (green) with a clear window to see the fused metal on the inside.

Sorry Im not technical about this but it fixed my problem.

Damon.